diff options
Diffstat (limited to 'ppp/ip-down.ipv6to4')
| -rw-r--r-- | ppp/ip-down.ipv6to4 | 83 |
1 files changed, 50 insertions, 33 deletions
diff --git a/ppp/ip-down.ipv6to4 b/ppp/ip-down.ipv6to4 index 29a4e8a0..de2c6085 100644 --- a/ppp/ip-down.ipv6to4 +++ b/ppp/ip-down.ipv6to4 @@ -4,30 +4,38 @@ # # # Taken from: -# (P) & (C) 2000-2001 by Peter Bieringer <pb@bieringer.de> +# (P) & (C) 2000-2002 by Peter Bieringer <pb@bieringer.de> # -# Version 2001-07-15a +# You will find more information in the IPv6-HowTo for Linux at +# http://www.bieringer.de/linux/IPv6/ +# +# Version 2002-01-25 # # Calling parameters: # $1: interface name # -# Called by (mostly) /etc/ppp/ip-down.local +# Called (mostly) by /etc/ppp/ip-down.local # like: /etc/ppp/ip-down.ipv6to4 $1 >>/var/log/ppp-ipv6to4.log 2>&1 # +# Note: this script will *check* whether the existing 6to4 tunnel +# was set before by using "ip-up.ipv6to4" comparing IPv4 address +# of device with the generated 6to4 prefix +# # Uses following information from /etc/sysconfig/network: # NETWORKING_IPV6=yes|no: controls IPv6 initialization (global setting) # # Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1: # IPV6TO4INIT=yes|no: controls configuration -# IPV6TO4_RELAY=IPv4addr: remote IPv6to4 relay address -# IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64": information to setup local subnetting -# IPV6TO4_CONTROL_RADVD=yes|no: controls radvd triggering -# IPV6TO4_RADVD_PIDFILE=file: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" +# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup local subnetting +# +# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering +# IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid" +# IPV6_RADVD_TRIGGER_ACTION=startstop|reload|restart|SIGHUP: how to trigger radvd [optional, default is SIGHUP] # if [ -z "$1" ]; then - echo $"Arg 1 is empty but should contain interface name - skip IPv6to4 initialization" >/dev/stderr + echo $"Argument 1 is empty but should contain interface name - skip IPv6to4 initialization" exit 1 fi @@ -40,10 +48,14 @@ cd /etc/sysconfig/network-scripts CONFIG=$1 [ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG -source_config +source_config + +# IPv6 don't need aliases anymore, config is skipped +REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'` +[ "$DEVICE" != "$REALDEVICE" ] && exit 0 # Test whether IPv6 should be configured, else stop -[ "${NETWORKING_IPV6}" = "yes" ] || exit 0 +[ "$NETWORKING_IPV6" = "yes" ] || exit 0 if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then exit 1 @@ -51,50 +63,55 @@ fi . /etc/sysconfig/network-scripts/network-functions-ipv6 + # Run basic IPv6 test, if not ok, skip IPv6 initialization -test_ipv6 testonly || exit 0 +ipv6_test testonly || exit 0 +# Test device status +ipv6_test_device_status $DEVICE +if [ $? != 0 -a $? != 11 ]; then + # device doesn't exist or other problem occurs + exit 1 +fi # Shutdown of 6to4, if configured valid6to4config="yes" -if [ -z "$IPV6TO4_RELAY" ]; then + +# Get IPv4 address from interface +ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`" +if [ -z "$ipv4addr" ]; then + # Has no IPv4 address valid6to4config="no" fi + +# Get local IPv4 address of dedicated tunnel +ipv4addr6to4local="`ipv6_get_ipv4addr_of_tunnel tun6to4 local`" + +# Check against configured 6to4 tunnel to see if this interface was used before +if [ "$ipv4addr" != "$ipv4addr6to4local" ]; then + # IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup + valid6to4config="no" +fi + if [ "$valid6to4config" = "yes" ]; then # Beep if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2666; else echo -en "\a" >/dev/console; fi - if [ "$IPV6TO4_CONTROL_RADVD" = "yes" ]; then - # stop RADVD from distributing no longer usable 6to4 prefixes - if [ -z "$IPV6TO4_RADVD_PIDFILE" ]; then - IPV6TO4_RADVD_PIDFILE="/var/run/radvd/radvd.pid" - fi - # Send SIGHUP to radvd - if [ -f "$IPV6TO4_RADVD_PIDFILE" ]; then - pid="`cat $IPV6TO4_RADVD_PIDFILE`" - if [ ! -z "$pid" ]; then - # still waiting for feature enabling: stopping distribution of prefixes in RADVD.... - # kill -SOMETHING $pid - false - else - false - fi - fi + if [ "$IPV6_CONTROL_RADVD" = "yes" ]; then + # Control running radvd + ipv6_trigger_radvd down "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE fi - # Delete all static IPv6to4 routes to relay - ifdown_ipv6_route_all sit0 ::$IPV6TO4_RELAY - if [ ! -z "$IPV6TO4_ROUTING" ]; then # Delete routes to local networks for devsuf in $IPV6TO4_ROUTING; do dev="`echo $devsuf | awk -F- '{ print $1 }'`" - ifdown_ipv6_route_all $dev :: + ipv6_cleanup_routes $dev :: done fi # Delete all configured 6to4 address - ifdown_ipv6to4_all sit0 + ipv6_cleanup_6to4_tunnels tun6to4 # Beep if [ -x /usr/bin/beep ]; then /usr/bin/beep -f 2000; else echo -en "\a" >/dev/console; fi |